Been trying to get that error to come up again with different combinations of the mods and different settings with no avail. It seems to be quite elusive.
One note though, when this came up I just started work on my first game engine just after I moved into the office, got the prompt to move as soon as I started the game with 100m just for LULZ, every other time I have started the game with enough to move straight away the prompt didn’t come up for at least 2 min. May have been that it was out of order, Seen some pretty weird stuff because things happened out of order, just a thought.

If you have conflicting mods, (mods that change the same things) this error usually occurs. I suggest you delete all your mods, and enable them one by one. If it still doesn’t work, re-install the game.

After modding the game I started a new company. When I started to make a game, and finished the “idea” screen (the screen where you choose the topic and all that), the game just froze and had my monthly expenses in the corner (which is how I noticed that it was freezing). I started a new game and any pop-up events would be blank, even though I already fixed that glitch, and was stuck there, raging… Any help?

First of all, i tried to reinstall the games 2 times so that won’t help. Now to the problem. When i start the game it acts just as it should, but when i try to verify things like clicking ANY buttons (ex. after writing my company name and name) errors like “Uncaught TypeError: Cannot read property ‘isCustom’ of null”. Sometimes other things than “isCustom”.
On top of that alot of buttons go invisible but when i hover the mouse over the place where the button should be i can see how my mouse icon changes and shows that i can click on the place, but nothing happens.
I have 2 mods installed: Info stats mod and expansion pack (the game can’t pick it up though)
and ultimate lib.

I would really appreciate any help i can get!
Sorry if my text is confusing, english isn’t my first language.

Is your expansion pack mod folder called “GDT-Expansion-Pack-master”? If so, you have to rename it to “GDT-Expansion-Pack” to make it work. If that doesn’t solve the problem, please post a screenshot of your mods folder like @KizzaGaming said.

Errors related to isCustom are usually caused by mods. Try disabling all mods and re-enabling them one by one to see which one is causing them. Remember to always start a new savegame when re-enabling, because those errors can also show up when you disable a mod and load a savegame that you played before with it enabled.

yes but I have already unistalled and reinstalled without mods and still doesn’t work
I have installed mod UltimateLib,SuperConsoles, savebackup, platform-randomiser, percentager, gdt-modAPI, GDT-Expansion-Pack-master, dmultiplayer, camelot, AchievementsandConsoles and CM pack